I called Nick Micale at Arizona GN and he highly recommended (and sold me) the TA performance billet silent timing set. It uses a link chain with billet gears and a tensioner. I couldn't be happier with it. It's a little more expensive than roller at $115 but that's nothing with these cars. Also when I removed my original chain and gears at just over 50k miles it was all still in good shape except the tensioner spring was weak and causing a ticking sound. Nice and quiet now.
http://www.taperformance.com/proddetail.asp?prod=TA_V1522B
http://arizonagn.com/
I haven't used this yet but am in the next motor. Seems like the best of both worlds as far as stock type noise levels and near double roller strength and reliability. I like the idea of using a tensioner too. I am currently running a Cloyes from Kirban without tensioner and it was inspected after 40k miles and had no noticeable stretch yet. Just wanted to be clear.